Floor De Graaf Books

Anton L. Koster 1859 1937

By Annemarie Vels Heijn, Floor De Graaf

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Geschilderde tuinen

By Floor De Graaf

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Dit boek presenteert tuinschilderijen van Nederlandse, Belgische, Franse en enkele Duitse kunstenaars uit de periode rond 1900. Voor de impressionisten waren parken en tuinen een belangrijke bron v...

Leo Gestel hervonden

By Floor De Graaf, Leo Gestel

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Exhibition features two private collections discovered by chance and containing previously unknown drawings, watercolors and pastels. One of the collections comes from South Africa and includes a n...

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.